Question

Why are solar heating devices painted black ?
Name two devices and list two limitation of these devices ?

Answer 1

due to much absorption capacity of black colour and silicon and gallium arsenide limitation is work in forward biased voltage

Answer 2

ANSWER:

✨Solar heating devices are painted black because, black is the best absorber of heat. So, all solar heating devices are painted black.

✨Solar heating devices are solar cells & solar cookers

Solar cells:-highly expensive.

                 cannot store energy for longer time.

Solar cooker:-slow cooking.

                    cannot be used on a cloudy/windy day.